Small numbers Student activity Play

Smog and acid rain Whiteboard exercise Play

Smog and acid rain Student activity Play

Sodium cation Student activity Play

Sodium cation Whiteboard exercise Play

Sodium cation Animation Play

Sodium sulphide Animation Play

Sodium, magnesium and aluminium oxides Animation Play

Solid substances as catalysts in reactions in the gaseous phase Animation Play

Solids Class activity Play

Solids Whiteboard presentation Play

Sources of atmospheric sulphur dioxide Slideshow Play

sp3 Hybridisation Student activity Play

Spectral analysis Student activity Play

Spectroscopy and electromagnetic radiation Student activity Play

Spectroscopy and quantisation of energy Animation Play

Spontaneous and stimulated emission Student activity Play

Spontaneous emission Animation Play

Stable electron configuration of neon, Ne Student activity Play

Stable electron configuration of neon, Ne Whiteboard exercise Play

Standard enthalpies of combustion for selected substances Chart Play

Standard enthalpies of formation for elements Chart Play

Standard enthalpy change Student activity Play

Standard enthalpy of combustion Student activity Play

Standard enthalpy of formation Student activity Play